<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Screen Share</title>
</head>
<body>
    <p>
        <button id="btn_start">Start</button>
        <button id="btn_share">Share</button>
        <button id="btn_stop">Stop</button>
    </p>

    <div>
        <video id="local_video" autoplay></video>
    </div>
</body>
</html>